ISHS Acta Horticulturae 47: II International Symposium on Flower Bulbs
WINTER BLINDNESS OF GLADIOLUS: INTERACTION OF LIGHT AND TEMPERATURE |
| Authors: | R. Shillo, A.H. Halevy |
| Abstract:
Total solar irradiance is the most important factor affecting winter flowering of gladiolus. Winter low light energy fluxes affect flower development directly, whereas short days have a dual effect, one of reducing the total daily solar irradiance and the other a photoperiodic effect of reducing the time from planting to flowering, thus decreasing the total solar irradiance. Plants at the 4 to 6 leaf stages are most sensitive to prevailing light conditions. Low night temperature is a secondary factor promoting flower blasting. Plants are most sensitive to chilling injury at the second and the 5th to 7th leaf stage. | |
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